Half lap for combing textile fibers



Dec. 14 1926.

W WOOD HALF-LAP \FOR COMBING TEXTILE FIBERS Filed August 6. 1923Patented Dec. 14, 192 6. I

a rimaran STATES.

ears w a rice;

WILLIAlVLWOOD, F FA L RiVER, MASSACHUSETTS, ssIGNoR r0 Jar/[Es K.LANNING,

' OFIFALL RIVER, MA SSAGI-IUSETTS.

HALF LAP FOR COMBINGTEXTILEFIBEBSJ Application filed August 6, 192a sera no. lessees.

This invention relates to'the art of combing yarn, and isparticu'larlyconcerned with V the construction and arrangement of thesocalled halflaps which constitute the comb- 5-ing elements of acombing machinetoupull or combout the short fibers from the staple, and at the sametime lay-the remammg fibers lengthwise in parallelism with one another.

7 series of separate, sections secured to a half} round shell or: base,each section carrying-v a row of spaced needles pro ectmg outwards 151lyjbey0nd the peripheral face'zof its supporting section. Such aconstruction, hoW- ever,,entails'serious practical difiiculties. If

one row ofineedles in the forward part of the combbe injured all thesections to. the 2 rearward must be removed to permit the re- .Inovalandreplacement 7 of the imperfect.

sent away forrepairsfnecessitates carryinga large number of extrahalf-laps besides involving large expenses for repairs;

'4 Furthermore, half-laps as heretofore cone. structed caused muchtrouble and loss' by reason ofthe accumulation'of flocks of lint whichadhered to the surface and preventedh the comb "from properly performi git Work} 1 holding means abutting against opposite 9- sidesof the frontand rear sides of the butt 1 ends of thejneedlesin such manner that the"needle-supportingwall, on the forwardaor underside ofthe needles,retreats ffarthei lint in frontof each row of needlesfi's eifec-f tivelyprevented, probablydue toithe "fact that'the-cl'earing brushesactmore'eifective' ly to remove the lint from between the needles;Furthermore, the holding member,

bed or matrix which formsthe'anchorage or support for each rowoffneed-lesfis-so constructed and-dimensioned, with reference to Theactive combing member or half-lap as heretoforemade has been built up111 a;-

bars or comb elements.

bar receivingslots.

volving supportings'haft or shell? v In the process of I manufacture,the outer or peripheral surface4,=ofthe supporting member 1," isdescribed on a circle that is," slightly eccentricto the-axis ofrotation. In

the needle-carrying barslthat no cracks or crevices are found in thecompleted halflap for the lodgement or adhesion of lint. Other featuresrelate to the means for supporting and securing the needles in place,all of which will be described in detail in the following specificationand Will finedinthe annexed claims.

In the accompanying drawings I have illustrated different forms ofconstructionand arrangement"embodyinglthe principles 7 of thisinvention, ina'which:

Figure 1 isianend elevation of ahalf-lap Y constructed according to thisinvention and secured to its revolving support.

Figure 2 is a longitudinal section through said half-lap on theplane ofthe forward, wall of the comb-retaining slot, showing;' the means forfastening the comb-baror element in place.

' Figure 3 is anend elevation of a modified form of half-lap secured to;its revolving support in which common fasteningor lockv V ing means areemployed for all the needle Figure 4 isalongitudinalsection of themodification ofvFigure 3 ma plane coinci-v dent with the front wall ofone of'the comb.-

- Figurei'5, is an end elevation of another modification-in which theneedle-carrying or comb-bar is made inlongitudinalsections. v

,Figure 6' is a longitudinal section through v 1 the half-lap shownin'Figure 5, ona'; plane With theseobj'ects in view-: I provide fahalf-lap construction comprising successive .rows' of spacedneedles-firmly supported bycoincident'witha front wall of one of thecomb-retaining slot o v @In the'practice of this invention," accordsegment of-a hollow cylinder which arcuate bed member 1s formed withyitsinner surface 2, concentric with the axis of its revolution, d

and with the periph'eral surface of 'its reter of tlie are forming theoutercurved sur- 7 face of thecomb-holdmg member is coinci-- dent withthe intersection of the lines y.y and w In the outside of the matrix orbed- I, I cut a r e at bene ted-re ots 5. he r ception of theneedle-carrying bats forming;

the comb elements. These slots or channels are inclined forwardly ofthe. intersecting radii, that is, in the dlrection of revolution of thehalf-lap which is indicated by the arrow in Figure 1. e g

The cutting of these slots leaves a series of longitudii alf peripheralribs 5, whose front and rear walls form the boundary of' twosuccessiveslots. The, outer faces of theseribs are cut away as to, leave the rearedge of each rib which forms the; front wall of each slot lower than thefront edge. of each. rib which forms the rear wall of the next slotadvance or, to state: it dififerently, the front edge of each sl'ot isnearerto the axial center and farther fromthe pointsof its row ofneedlesth-a-n istli-e rear edge oii each slot, due to the lengthwiserecess formed as aforesaid.

The comb elementcomp-rises flat bar 6-, rabbeted at its forwardandouteredge to form ashal-low channel for the reception ofilla? need' les whichare 'pl ace'd side by side along that portion of the bar with theirouter ends uniformly spaced apart, the needles being-soldered tof'thethin part of tl1=ebar (5', to securetl ie-min paral lelism on bar. 7 Iare so dimensioned that the points oi all needles in each row, as Wellas all the rows of needles, are equidistant from the axial cente-r ofrotation. Owing to; the inclination oi successive rows of needles and tothe eccentricity of the curve, coincident with the higl r-points of, theribs 5', to; the axizali center, the points 'oi'ithe need l'es, whilemoving: through the. same circular path oat revolution, projectfartherand farther beyondi the outer. surfacev of: the bed or: matrixfrom theurear: row to the front row ot- 0t needles, to. lie. flush withthe. adjacent edge; oi: the Iiib and each comb element ismadeto exactlyoccupy or fill the. slot for which it intended so. as to! leave. no

crack or crevice: tor thecatching of lint;

15118 cuttlng; away of: the. rear edge por- I tion ofeach.rilbtoicaiuseaittoiliexctarther from,

the point or. nearer to; the axial centerthan does, the: supportingmaterial on; the rear" side of each'row off needles-g. I have found,

- results; producing. an; offset which substan tiality: eliminatesthe-heretofore very trouble- 80 11131ElflCLllllliillfiitIOH.Oiflint'which. has usually; lodged or wedged. in. the. angzl-eibetween theforwardonunderside'otthe; needles. and

the peniphenal: surfiacei otthe. halr lap and.

The needle bars and the needles the tapered end ofthe fastening: screw8',

whichistapped intoshort threaded holiesformed in the en-d v walls ofeachsliot. By tightening these fastening screws each needlebar beproperly adjusted l'engtlrwise and anchored to the bottom. of itssuzpporting slot l a y The half-lap is secured to its shaft or re;-volving su-ppojrt i-n anvsuitasble: manner as by means: ofradial screws:9, which pass: through projecting flanges 1, formed? on: the. rear andfront sides of thebedt In Figure 3, I haveillustrated; a modified Y formofconstrnctlion tor: seeming; the. needle.-v carrying bars in theholideror bed... In. this; case a single 'fiastening. element is employed foranchoring the whole series of bars and comprises, as". shown, an arcuatekeyebar 16)), provided with an inwardly extending; flange. 10overlapping the endv oi? the bed: 12., and provided with, ascrew=receivi11g perform.

'tion intermediate of its: ends through which is: inserted. the.fastening. screw 13,, which. is; tapped. into the. end; face of the baseor bed 12'. The. arrangement at the needles in this case, is: similar tothat already shown Figures 11 2;.

It may prove tot ties: to make. the. needle bars; in short sections sothat only one short. section needv be 1"8': placed in case of injury,instead ofithe en,- tirebar;.- with tliis. end: in view, I hate; shownllm'EIgHlBS 5:v and 6- a.- construc io in; which the needle-bars arecomposed. of'in. terinediate sections 2.0, and: end: sections 21,

be; advantageous in; pracformed with abutting; square: ends, the:sectionsbeing. held in position by; means longitudinal". rod or key 22,dimensioned. to. be. driven into the: longitudinal; groove formed partlyin the: bar sections and: part.

ly in. the wall of the. retaining, slzot formed; in: the; bed plate 28.Lengthwise displace-r ment ot'theileeiy and barnlay be: pneventedi bythe use of each key.:.. V.

For convenience. in. preventing the. insee. tion of the wrong. needlebar'iin. any panticur. lar slot, the respective bars; and slots maynutsi 2d,. on; opposite, ends Offi' be marked with; identifiying;letters [or numerals.

I/YhatI claim is: I 1. A halt-lap. for: combing embracing in itsconstruction. plural rows: oi spaced] needles concentrically arranged;

textile fibers,"

side of said slot, and a needle-carrying ele-v ment secured in saidslot, substantially as described.

A half-lap for combing textile fibers embracing in its construction arevoluble integral bed member provided with a serles of longitudinalslots extending obliquely to radial planes intersecting'them, theforward walls of the respective slots being substan tially cut away inan approximately tan-v gential direction to make them lower than therearward walls thereof, a needle-carrying member inserted in each slot,and means for securing the needle-carrying members detachably inposition, substantially as described.

4. A half-lap for combing textile fibers embracing a revolublesegmental. carrier provided with a plurality'of outwardlyprojecting'ribs separated by narrowslots, a series of needle combssnugly inserted in said slots to avoid the formation of any crevice infront of the combs, the" forward exterior edge of each .rib' extendingoutwardly nearer to the. points of the needles than does the rear edgeof the next forward rib in contact with the needles, substantially" asdescribed.

5. Ina half-lap for combinglfibers, the

combination of a longitudinally slotted ar cuate bed provided withlongitudinal slots, 7 needle carrying members inserted in said slots toallow the needles to project outwardly, and removable fastening meansadaptedto be threaded endwise into the slot a in the bed to engage andlock the needlecarrying members detachably inposition, substantially asdescribed.

6. Inv a half-lap for combing fibers, the combination'of alongitudinally" slotted arcuate bed, comb elements, each comprisingprevented, substantially as dea bar and a row of needles securedthereto,

inserted in said slots, said bar being provided with locking recessesand longitudinally' disposed fastening devices arranged to have threadedengagement in said recess and detachablylock the comb element inposition, substantially as described.

7. In a half-lap for combing fiber, the combination of a longitudinallyslotted arcuate bed, a series of comb-elements com prising a bar and arow of laterally projecting' needles secured thereto, said bar beingmade in longitudinal sections and being providedwith lockmg recesses,and means for engaging said recesses to secure sald elements firmly butdetachably in operative posit-ion, substantially as described.

8. In a half-lap for combing fibers, the combination of an arcuate bedprovided with parallel longitudinal slots in its periph-' ery, combelements detachably secured in said slots,each element comprising alongi-' tudinal bar transversely divided into sections, and needlessecured transversely thereof to project laterally outward, and commonlocking means engaging all said sections for detachably securing saidsections in operative position in said described.

9. A half-lap for combing fibers, embracing in its construction arevoluble arcuate bed plate provided in its peripheral surface withlongitudinal forwardly inclined slots, comb elements, each comprising alongitudinal .bar with a row of needles secured slots, substantially asj on its forward side to project beyond the outside edge of said bar,said comb elements beingsnugly secured insaid slots with their outeredges flush with the rear edges'of said Slots, and outwardly offset withrelation to the forward edges of the corresponding slots, substantiallyas described.

10. Acomb member embracing a fiat bar longitudinally grooved inwardlyfrom its edge to form a needle-receiving recess 'lengthwise of the bar,and a rowof transversely' disposed pointed needles secured side by sidein said rece"s with their tapered points projecting beyond the edge ofthe bar, whereby the comb element is'adapted to snugly. fit into andcompletely fill a receiv-- ing slot in the arcuate bed of'the half-lap,

- substantially as described.

In witness whereof, I have subscribed the above specification. 7 g

- 7 WILLIAM WOOD.

